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/* -*- c-basic-offset: 4; indent-tabs-mode: nil; -*- //------100-columns-wide------>|*/ /* * Copyright (c) 2003 Extreme! Lab, Indiana University. All rights reserved. * * This software is open source. See the bottom of this file for the license. * * $Id: MXParser.java,v 1.52 2006/11/09 18:29:37 aslom Exp $ */ package org.xmlpull.mxp1; import java.io.EOFException; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.Reader; import java.io.UnsupportedEncodingException; import org.xmlpull.v1.XmlPullParser; import org.xmlpull.v1.XmlPullParserException; //TODO best handling of interning issues // have isAllNewStringInterned ??? //TODO handling surrogate pairs: http://www.unicode.org/unicode/faq/utf_bom.html#6 //TODO review code for use of bufAbsoluteStart when keeping pos between next()/fillBuf() /** * Absolutely minimal implementation of XMLPULL V1 API * * @author <a href="http://www.extreme.indiana.edu/~aslom/">Aleksander Slominski</a> */ public class MXParser implements XmlPullParser { //NOTE: no interning of those strings --> by Java lang spec they MUST be already interned protected final static String XML_URI = "http://www.w3.org/XML/1998/namespace"; protected final static String XMLNS_URI = "http://www.w3.org/2000/xmlns/"; protected final static String FEATURE_XML_ROUNDTRIP= //"http://xmlpull.org/v1/doc/features.html#xml-roundtrip"; "http://xmlpull.org/v1/doc/features.html#xml-roundtrip"; protected final static String FEATURE_NAMES_INTERNED = "http://xmlpull.org/v1/doc/features.html#names-interned"; protected final static String PROPERTY_XMLDECL_VERSION = "http://xmlpull.org/v1/doc/properties.html#xmldecl-version"; protected final static String PROPERTY_XMLDECL_STANDALONE = "http://xmlpull.org/v1/doc/properties.html#xmldecl-standalone"; protected final static String PROPERTY_XMLDECL_CONTENT = "http://xmlpull.org/v1/doc/properties.html#xmldecl-content"; protected final static String PROPERTY_LOCATION = "http://xmlpull.org/v1/doc/properties.html#location"; /** * Implementation notice: * the is instance variable that controls if newString() is interning. * <p><b>NOTE:</b> newStringIntern <b>always</b> returns interned strings * and newString MAY return interned String depending on this variable. * <p><b>NOTE:</b> by default in this minimal implementation it is false! */ protected boolean allStringsInterned; protected void resetStringCache() { //System.out.println("resetStringCache() minimum called"); } protected String newString(char[] cbuf, int off, int len) { return new String(cbuf, off, len); } protected String newStringIntern(char[] cbuf, int off, int len) { return (new String(cbuf, off, len)).intern(); } private static final boolean TRACE_SIZING = false; // NOTE: features are not resettable and typically defaults to false ... protected boolean processNamespaces; protected boolean roundtripSupported; // global parser state protected String location; protected int lineNumber; protected int columnNumber; protected boolean seenRoot; protected boolean reachedEnd; protected int eventType; protected boolean emptyElementTag; // element stack protected int depth; protected char[] elRawName[]; protected int elRawNameEnd[]; protected int elRawNameLine[]; protected String elName[]; protected String elPrefix[]; protected String elUri[]; //protected String elValue[]; protected int elNamespaceCount[]; /** * Make sure that we have enough space to keep element stack if passed size. * It will always create one additional slot then current depth */ protected void ensureElementsCapacity() { final int elStackSize = elName != null ? elName.length : 0; if( (depth + 1) >= elStackSize) { // we add at least one extra slot ... final int newSize = (depth >= 7 ? 2 * depth : 8) + 2; // = lucky 7 + 1 //25 if(TRACE_SIZING) { System.err.println("TRACE_SIZING elStackSize "+elStackSize+" ==> "+newSize); } final boolean needsCopying = elStackSize > 0; String[] arr = null; // reuse arr local variable slot arr = new String[newSize]; if(needsCopying) System.arraycopy(elName, 0, arr, 0, elStackSize); elName = arr; arr = new String[newSize]; if(needsCopying) System.arraycopy(elPrefix, 0, arr, 0, elStackSize); elPrefix = arr; arr = new String[newSize]; if(needsCopying) System.arraycopy(elUri, 0, arr, 0, elStackSize); elUri = arr; int[] iarr = new int[newSize]; if(needsCopying) { System.arraycopy(elNamespaceCount, 0, iarr, 0, elStackSize); } else { // special initialization iarr[0] = 0; } elNamespaceCount = iarr; //TODO: avoid using element raw name ... iarr = new int[newSize]; if(needsCopying) { System.arraycopy(elRawNameEnd, 0, iarr, 0, elStackSize); } elRawNameEnd = iarr; iarr = new int[newSize]; if(needsCopying) { System.arraycopy(elRawNameLine, 0, iarr, 0, elStackSize); } elRawNameLine = iarr; final char[][] carr = new char[newSize][]; if(needsCopying) { System.arraycopy(elRawName, 0, carr, 0, elStackSize); } elRawName = carr; // arr = new String[newSize]; // if(needsCopying) System.arraycopy(elLocalName, 0, arr, 0, elStackSize); // elLocalName = arr; // arr = new String[newSize]; // if(needsCopying) System.arraycopy(elDefaultNs, 0, arr, 0, elStackSize); // elDefaultNs = arr; // int[] iarr = new int[newSize]; // if(needsCopying) System.arraycopy(elNsStackPos, 0, iarr, 0, elStackSize); // for (int i = elStackSize; i < iarr.length; i++) // { // iarr[i] = (i > 0) ? -1 : 0; // } // elNsStackPos = iarr; //assert depth < elName.length; } } // attribute stack protected int attributeCount; protected String attributeName[]; protected int attributeNameHash[]; //protected int attributeNameStart[]; //protected int attributeNameEnd[]; protected String attributePrefix[]; protected String attributeUri[]; protected String attributeValue[]; //protected int attributeValueStart[]; //protected int attributeValueEnd[]; /** * Make sure that in attributes temporary array is enough space. */ protected void ensureAttributesCapacity(int size) { final int attrPosSize = attributeName != null ? attributeName.length : 0; if(size >= attrPosSize) { final int newSize = size > 7 ? 2 * size : 8; // = lucky 7 + 1 //25 if(TRACE_SIZING) { System.err.println("TRACE_SIZING attrPosSize "+attrPosSize+" ==> "+newSize); } final boolean needsCopying = attrPosSize > 0; String[] arr = null; arr = new String[newSize]; if(needsCopying) System.arraycopy(attributeName, 0, arr, 0, attrPosSize);